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A038794
T(n,n-4), array T as in A038792.
1
1, 5, 12, 21, 34, 55, 88, 138, 211, 314, 455, 643, 888, 1201, 1594, 2080, 2673, 3388, 4241, 5249, 6430, 7803, 9388, 11206, 13279, 15630, 18283, 21263, 24596, 28309, 32430, 36988, 42013, 47536, 53589, 60205, 67418, 75263
OFFSET
4,2
FORMULA
For n >= 7, a(n) = (n^4-18*n^3+143*n^2-486*n+672)/24.
a(n) = sum(A007318(n-k, k), k=0..4), n >= 7. - Johannes W. Meijer, Aug 11 2013
CROSSREFS
Sequence in context: A354399 A256320 A301693 * A225284 A271250 A271539
KEYWORD
nonn
AUTHOR
Clark Kimberling, May 02 2000
STATUS
approved